/* CirKit: A circuit toolkit
 * Copyright (C) 2009-2015  University of Bremen
 * Copyright (C) 2015-2017  EPFL
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#include "negative_controls_to_positive.hpp"

#include <reversible/functions/add_gates.hpp>
#include <reversible/functions/copy_metadata.hpp>


namespace cirkit
{

circuit negative_controls_to_positive( const circuit& src )
{
  circuit dest;
  copy_metadata( src, dest );

  for ( const auto& g : src )
  {
    for ( const auto& n : g.controls() )
    {
      if ( !n.polarity() )
      {
        append_not( dest, n.line() );
      }
    }

    gate& ng = dest.append_gate();
    for ( const auto& c : g.controls() ) { ng.add_control( make_var( c.line() ) ); }
    for ( const auto& t : g.targets() )  { ng.add_target( t );                     }
    ng.set_type( g.type() );

    for ( const auto& n : g.controls() )
    {
      if ( !n.polarity() )
      {
        append_not( dest, n.line() );
      }
    }
  }

  return dest;
}

}

// Local Variables:
// c-basic-offset: 2
// eval: (c-set-offset 'substatement-open 0)
// eval: (c-set-offset 'innamespace 0)
// End:
